The 47th Saguaro National Park Labor Day 8-Miler Run, September 5th, 2016. This scenic course and the post-race festivities truly embrace the spirit of the old Southwest, making the 47th Saguaro National Park Labor Day Run a regional favorite. The rolling 8-mile and 5k courses loop through the rugged cactus forest in the foothills of the scenic Rincon Mountains at Saguaro National Park East. This event has been featured as a Runner?s World Race of the Month and is currently featured in Runner's World online as one of the few races to take place on National Park Land.